"Pandora" <pan### [at] pandora-softwarecom> wrote in
> also the trailer will pivot
> around it's center of gravity (which you can probably safely assume is
> at the intersection of two diagonals of the bounding rectangle of the
> plan view of the main body of the trailer (unless it's a really oddly
> shaped trailer))... 


hmmm I thought it would turn on it's axle. Otherwise the wheels would still 
move sideways.


Thomas

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